Carbon dioxide isn’t just a greenhouse gas that’s thinning the atmosphere, but it’s also causing a popular food to lose its nutritional value over time, which will have a major impact on more than 2 billion people worldwide.
According to a recent study conducted in a joint effort by researchers in Japan, China, Australian, and the United States, higher levels of carbon dioxide in the atmosphere contribute to the decline of protein（蛋白质）and other key vitamins in rice. The study, published in the journal Science Advances, looked at 18 different agriculture sites in China and Japan over four years and found that the crops exposed to higher levels of carbon dioxide were overall less nutritious than those that were not.
“Many basic crops are impacted by the rise of carbon dioxide with respect to things like protein concentration and iron and zinc,” says Lewis Ziska, a co-author and research plant physiologist at the US Department of Agriculture. The research explains that the exposed rice contained 10 percent less protein,8 percent less iron, and 5 percent less zinc, while amounts of B1,B2 and B5 vitamins also declined. And increased levels of carbon dioxide doesn’t just have a negative effect on rice, but other food staples（主食）including wheat and potatoes also face serious consequences when exposed to higher levels.
While this certainly impacts many people worldwide, it follows that the people that would suffer the most would be those that consume the most rice, which, as the study also found, also happen to be those who live in the poorest countries.
Additional studies are now underway and researchers are trying to solve this problem by looking at the different types of each crop in hopes of finding the types that react the least, or not at all, to high levels of carbon dioxide.
Until then, what can you do? For starters, you can try to eat a variety of foods and get your vitamins and proteins from various sources. Then to help with the larger problem of global warming and climate change, you can make simple lifestyle changes such as hang drying clothes, walking to work, and turning off the lights when you’re not home.
1.What is the effect of higher levels of carbon dioxide?
A.It increases protein content in rice. B.It causes nutrient loss in crops.
C.It improves agricultural productivity. D.It directly affects people’s health.
2.Who may suffer most from the rise of carbon dioxide?
A.Those who eat the most rice. B.Those who eat wheat and potatoes.
C.Those who live in rich countries. D.Those exposed to higher levels of carbon dioxide.
3.What does the underlined word“underway”in para.5 mean?
A.Under the ground B.Under control
C.In the way D.In progress
4.How can we solve the problem caused by higher levels of carbon dioxide?
A.By developing new types of crops.
B.By eating more fresh foods.
C.By having different types of foods.
D.By changing the existing lifestyle totally
Denmark is only about half the size of South Carolina, but it produces more of its electricity from wind than any other country in the world. Denmark now gets 47%of its electricity from wind, and there will be more to come, thanks to a combination of history and policy.
Paul la Cour was a scientist and inventor who experimented with early wind power machines at the start of the 20th century. So it's not surprising that Denmark invested in building wind power the earliest. Since the 1970s,Denmark has been investing in wind energy all over the country. In the 1980s,due to a strong movement opposing nuclear power plants, Denmark increased its production of clean energy even before many other countries considered it.
Even back in 2002,Denmark took climate change warnings seriously. They drew up policies, aiming to cut fossil-fuel emissions by 20%,which they did via renewable energy investment. Some of the world's largest companies in the field—including Vestas, which builds turbines(涡轮机)，and Orsted, which specializes in offshore wind projects—are Danish, so the country has an impact beyond its borders.
The huge impact of Denmark’s wind industry is important. But Denmark is a small country, so while almost 50%of its electricity from wind is admirable, it's also minor in terms of entire global impact.
While Denmark gets half its electricity from 5,758 megawatts (MW) of capacity, Spain's 23,000 MW covers just 18 percent of its electricity supply as it’s a much bigger country. China is the leader in wind energy at 221,000 MW, and the U.S.is the second in the world at about 96,000 MW.
At the end of 2019,lawmakers in Denmark set a new goal: increasing the share of electricity coming from renewable power to 100%.
1.What can we know about Demark?
A.It is a leader in solar energy. B.It is a pioneer in clean energy.
C.It is a victim of climate change. D.It is an advocate of nuclear energy.
2.What is Denmark government's attitude towards fossil-fuel energy projects?
A.Indifferent. B.Ambiguous
C.Positive. D.Opposed.
3.Which country produces the most wind energy in the world?
A.Denmark. B.China. C.The U.S D.Spain.
4.What is the best title for the text?
A.Almost Half of Denmark’s Electricity Comes from Wind Power
B.Denmark's Government Pushes ahead with Fossil-fuel Projects
C.Denmark Has a Great Effect on World's Wind Power Equipment
D.Denmark Has a Long History of Developing Renewable Power
More than 30 years ago, there was a well-known boxer named Eugene Hart. Hart was heavily favored to win his next round against an ungifted boxer, Antuofermo. It was said that the only thing that Antuofermo could do was “he bled well". However, here was an important thing. He had good qualities that you couldn't see.
During the fight, Hart controlled Antuofermo, knocking him down and giving him a good beating. Antuofermo absorbed the punishment that was dealt to him by his naturally superior opponent, and he did it so well that Hart became discouraged. In the fifth round, Hart began to tire, not physically but mentally. Taking advantage of the situation, Antuofermo attacked and knocked Hart down, thus ending the fight.
When the fighters went back to their temporary restrooms, only a thin curtain was between them. Hart's room was quiet, but on the other side he could hear Antuofermo's coach talking about who would take the fighter to the hospital. Finally he heard Antuofermo saying, "Every time he hit me with that left hook （左勾拳）to the body, I thought I was going to quit. After the second round, I thought if he hit me there again, I'd quit. I thought the same thing after the fourth round. But he stopped hitting me there."
At that moment, Hart began to weep. He was crying because for the first time he under- stood that Antuofermo had felt the same way he had and even worse. And the only thing that distinguished the guy who was talking from the guy who was crying was perseverance （毅力）. The coward （懦夫）and the hero had the same emotions. They're both humans.
The important question to ask yourself here is this： How does each man respond to the tough situation that they are experiencing? Maybe you are in a tough position right now or, if not, one might be coming. How will you react? Like a hero or a coward?
1.What can we learn from paragraph 1?
A.Hart was an ordinary boxer.
B.Antuofermo was hardly defeated.
C.Hart was believed to win the game.
D.Antuofermo was gifted in boxing.
2.How did Antuofermo win the fight?
A.He trained hard before the fight.
B.Hart became discouraged by his coach.
C.He was confident about his boxing talent and power.
D.He dealt with the punishment properly and grasped the chance.
3.Why did Hart cry after the fight?
A.He realized he was just mentally defeated.
B.He was hurt and sent to a hospital.
C.He lost the game easily.
D.He was considered to be a coward.
4.What are Antuofermo's qualities?
A.Hard-work and honesty. B.Humor and intelligence.
C.Perseverance and determination. D.Enthusiasm and responsibility.
Park Regulations
Sec.11-1-1
A.Purpose and Definition．
In order to prevent the parks, parkways, and recreational facilities within the City from injury or damage, these regulations are enacted(制定).The term "park" used in this Chapter shall include all grounds, buildings, and watercourses which are located within any area for the public use as a park, parkway, or recreational facility.
B.Specific Regulations
1.Littering No person shall throw any rubbish, earth, or other material in any park.
2.Pets. Dogs, cats, or other pets are forbidden in all city parks, unless permitted by the Parks and Recreation Board. Excepted from the forbidding are animals specifically trained to assist the disabled.
3.Fires. No person shall start，tend，or maintain a fire except in personal grills(烤架)or specific fireplaces. Personal grills shall be used in specific picnic areas only. All fires should be thoroughly extinguished before leaving the area. Unburned fuel and ashes shall be got rid of in such a manner as to prevent damage to any park property.
4.Park Property. No person shall kill, injure, or disturb birds or animals within any park. No person shall cut down, or damage in any manner any tree, shrub, flower, soil, fountain, building, or other park property.
5.Vehicles. All motorized vehicles are limited in specific parking areas, roads, and drives. Speed limit is 15mph.Snowmobiles are not allowed.
6.Park Hours. Subject to certain exceptions, all city parks shall be closed to persons from 9:00 p.m.to 7:00 a.m. the following day. The exceptions are:
a）Persons launching or loading a boat at a public dock(码头).
b）The hiking paths are closed from 9:00 p.m.to 6:00 a.m.
c）Scheduled athletic games at least halfway concluded by 9:00 p.m. shall be allowed to continue at Cutler Park until 12:00 a.m.
1.According to the text, what are you permitted to do in the park?
A.Pick flowers. B.Trap squirrels.
C.Have a barbecue in specific areas. D.Begin baseball games at 9:30p.m.
2.What is the author's purpose in writing the text?
A.To tell a story. B.To inform readers.
C.To persuade people to visit the park. D.To convince readers of an opinion.
3.Where does the text probably come from?
A.A guidebook of a city. B.An introduction to parks.
C.An environmental report. D.A government document.
假定你是李华，外教Smith先生下周即将来你班任教。请你用英语写一封电子邮件向他介 绍你班的基本情况,内容包括：
1.班级人数；
2.英语学习的现状；
3.大家对他教学的建议。
注意：1.词数100左右；
2.可以适当增加细节，以使行文连贯；
3.开头和结尾已给出，不计入总词数。
Dear Mr Smith,
I'm Li Hua, a student from Class 1, Grade 3.
__________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
We are looking forward to your coming!
Yours,
Li Hua
假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有 10处语言错误,每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。
增加:在缺词处加一个漏字符号(∧)，并在其下面写出该加的词。
删除:把多余的词用斜线(\)划掉。
修改:在错的词下划一横线,并在该词下面写出修改后的词。
注意:1.每处错误及其修改均仅限一词；
2.只允许修改10处,多者(从第11处起)不计分。
Dear Peter,
I am pleasing to tell you that we have returned to China safely. I'm writing to express our appreciations for your reception.
We were impressed with our warm entertainment. With your careful preparation, the journey couldn't have been so successfully. We benefited a lot from the visit. We get a precious chance to learn British culture and history. It also offered us a platform where we could displayed traditional Chinese culture such as like paper-cutting and Chinese painting to more foreigners. We would like to invite you visit China this summer holiday, so you can experience the Chinese culture in person and have a deeper understand of it.
Yours,
Li Hua
